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Topics
Topic Alias - MQTT 5.0 new features
Feb 10, 2022 Jim Moen
Topic Alias - MQTT 5.0 new features

MQTT Topic Alias allows users to reduce the possibly long and repeatedly used topic name to a 2-byte integer, so as to reduce the bandwidth consumption when publishing messages.

Testing MQTT 5 features with the MQTTX
Jan 4, 2022 Shifan Yu
Testing MQTT 5 features with the MQTTX

We will introduce in detail the specific use of the new features of MQTT X v1.7.0, especially how to use MQTT X to test features of MQTT 5.0.

User Properties - MQTT 5.0 new features
Nov 25, 2021 Shifan Yu
User Properties - MQTT 5.0 new features

User Properties are the user-defined properties that allow users to add their metadata to MQTT messages to expand more application scenarios.

Enhanced authentication - MQTT 5.0 new features
Sep 21, 2020 Rory Zhang
Enhanced authentication - MQTT 5.0 new features

MQTT 5.0 adds a new feature enhanced authentication, which includes query/response style authentication can implement bi-directional authentication of the client and broker.

Introduction to MQTT 5.0
Sep 18, 2020 Zibo Zhou
Introduction to MQTT 5.0

Four years after the MQTT 3.1.1 has been released and became the OASIS standard, MQTT 5.0 was released, which is a significant improvement and upgrade.

Request Response - MQTT 5.0 new features
Sep 14, 2020 Zibo Zhou
Request Response - MQTT 5.0 new features

MQTT 5.0 adds the Response Topic, and defines the interaction process for Request Response. This article will introduce this feature in an easy-to-understand way.

Flow control - MQTT 5.0 new features
Aug 11, 2020 Zibo Zhou
Flow control - MQTT 5.0 new features

MQTT 5.0 brings many new features, this article will give an introduction to the use of the new feature "flow control" in an easy-to-understand way.

EMQX MQTT 5.0 Topic Rewrite
Apr 17, 2020 EMQX Team
EMQX MQTT 5.0 Topic Rewrite

EMQX MQTT 5.0 topic rewrite supports rewriting topic A to topic B, when subscribing topics, publishing messages and unsubscribing in MQTT client according to the rule configured by clients.

The process of publishing MQTT 5.0 message
Apr 15, 2020 EMQX Team
The process of publishing MQTT 5.0 message

The MQTT 5.0 protocol has made some upgrades for part of QoS packet, and the processes of dealing with packets, this article below display some simple introduction about the content of upgrades.

MQTT 5.0 Features of Inflight Window & Message Queue
Mar 31, 2020 EMQX Team
MQTT 5.0 Features of Inflight Window & Message Queue

When the simultaneously existing packets in the network link exceeds the limit, that is, the Inflight Window reaches its length limit of the (see `max_inflight`), the EMQX broker will no longer send subsequent packets, but will store these packets in the Message Queue.

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